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Pest Information

Radiate Fingergrass

Radiate Fingergrass

  • Latin Name: Chloris Radiata
  • Common Name: Radiate Fingergrass
  • Other Names: Plush grass

Pest Details

Radiate Fingergrass
Radiate Fingergrass

Origin:

Native to tropical America and Florida, but introduced to Hawaii and the Pacific Northwest.

Biology:

An annual grass that reproduces from seeds. It can be found as a very common roadside weed in Hawaii, and also occurs in pastures and cultivated areas, along roadsides and in disturbed sites, as well as along the banks of water courses.

Identification:

Mature plants grow to about 2 feet in height, with numerous stems arising from the base. These are slightly flattened, and are sometimes purplish at the joints. The stems are rigid, but do create a spreading habit. The leaves are up to 6 inches long with a rounded tip and a rough texture. The flower head is a radiate arrangement of feathery spikelets that arise from a single point at the end of the stem, and generally project upward almost cuplike, to about 3 inches in length. The flowers each have several long, slim awns, and the overall color is dark purplish.

Characteristicts Important to Control:

Physical removal of single plants if effective. Chemical control can be achieved using a pre-emergent herbicide to prevent seed germination, or a non-selective contact or systemic herbicide on maturing plants.

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